200 ran from Oakland to Alpine. I am unsure how it got from Oakland to Ridgewood; in and east of Ridgewood it used Glen Ave, Maple Ave (now 507), Ridgewood Ave, Oradell Ave, Pascack Rd, Ridgewood Ave, Kinderkamack Rd (now 503), New Milford Ave, Madison Ave, Union Ave, and Hillside Ave to end at US 9W in Alpine.

201 ran from near Ridgewood to Alpine. It appears to have begun at 17; it may have extended west on Linwood Ave to end at Maple Ave (which was 200). It then used Linwood Ave, Ridgewood Rd, Lafayette Ave, Westwood Ave, Kinderkamack Rd (now 503), Old Hook Rd (now 502), High St (now 502), and Closter Dock Rd (now 502) to end at US 9W in Alpine.

203 ran for 15 miles from Weehawken to the old ferry at Alpine along the Hudson River, using current 505 from Weehawken to Palisade Ave in Englewood Cliffs, and then Henry Hudson Dr to the old ferry docks at Alpine. This is not the same Skyline Drive as the famous one in Sussex County, but this one did get embossed on route shields (photo at right, found on E*Bay by SPUI).

501 has two sections, linked by a secret multiplex with 440 into and out of Staten Island (there is no NY 501 or Richmond CR 501 counterpart). The Middlesex County section is signed east-west, and the Hudson-Bergen one is north-south. 501 is multiplexed with most of 184, 63, and 93.

Truck 502 is signed in the westbound direction to bypass a hill in Ho Ho Kus but is not an official route. It follows Sheridan Ave (Bergen CR 77) to N Franklin Tpk (507), entirely in the Borough of Ho Ho Kus.

Signs multiplex 503 and 120 north from 3 to the actual beginning of 503; I don't believe 503 ever began at what is now 3, since 3 ended where 503 now begins until 1953, and 120 ended in the same spot until 1973.

Truck 505 is signed in the northbound direction to bypass a hill in Englewood but is not an official route. It follows US 9W from 505 in Englewood Cliffs to Fort Lee, then turns onto 4 to Englewood where it turns north on 501 to meet 505 again.

East of Belleville, 506 used to multiplex with 7, and is still signed that way heading west from the Holland Tunnel (which may be a legacy of replacing old sign text verbatim). I am not sure where the official end was; it could have been either at 508 or US 1-9 Truck. Now it is truncated to end where the eastern section of 7 begins (there is a disjoint between two sections; visit that page for more). Some time before the GR, all of current 506, and possibly original 506 to Jersey City, was 9. Even farther back, 23 may have used Bloomfield Ave east of Verona.

There is a discrepancy in West Orange. The SLDs (as of 2011) still officially have 508 on Kingsley between Whittingham and Valley, but Kingsley is one-way northbound. Furthermore, 508 West is signed on Whittingham from Valley east of the Kingsley intersection. I assume that 508 East de facto follows Whittingham to Valley, but do not know whether 508 West now follows suit (and the SLDs lag behind) or if Kingsley is still correct and field signage in error.

This was once the southern part of 577. At some point, NJDOT must have decided that it was too much work to multiplex 577 through the 124/82 intersection, and split the route in two. At some yet later point, apparently (by signage) Spur 509 was joined back to 577 and became part of it again - Chris Mason says that this happened in 2003-4. Chris also says that the SLD's, which still contain Spur 509, simply haven't been updated, but the last update was in 2006 - after the supposed turnback. I'll leave the route log here and wait for more to develop.

510 may have originally multiplexed with 513 and 517 west to Hackettstown [Al Tossoonian and an old Morris County map]. 510 definitely extended east at one time to US 1/US 9 at US 1-9 Truck. It also is part of the old route of 24.

There is an END 514 assembly at Park Ave (CR 616) in Linden, but NJDOT continues 514 to 439, and signs it there as well. Middlesex County maintenance ends just east of Park Ave, and the county in fact considers 514 to turn southeast on Park Ave and then northeast on Linden Ave and Lidgerwood Ave. NJDOT considers Linden and Lidgerwood to be CR 656, including the one-way southbound section north of 439, while the county even includes that one-way section in its definition of 514. Since the county maintains the signs, the signage in the field disagrees with the Straight Line Diagrams and what I have listed below, but I'm not changing what I have unless there is agreement.

One Spur 514 ran west from 514/27 just north of New Brunswick, along the river, to 28. For many years, Spur 514 carried the northern part of 18 and its predecessor, S28; see those entries for history. Once 18 was truncated to Spur 514 (River Rd/ Lincoln Blvd), and more recently extended past it, there was no reason to maintain the road as a primary numbered county route. In the great de-designation of 1999-2000, therefore, Spur 514 was downgraded to Middlesex CR 622.